Harrow.



mu. WAKEFIELD HARROW,

APPLICATION FILED DEC-27, I911.

1,265,979. Patented Mayl l, 1918.

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HARRY URBAN WAKEFIELD, 0F DARKS MILL, TENNESSEE. I

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Specification of Letters Patent. Patented May 14, 1918.

Application filed December 27, 1917. Serial No 209,061.

To all whom it may concern: Be it known that I, HARRY U. WVAKE- FIELD, acitizen of the United States, residing at Darks Mill, in the county ofMaury and State of Tennessee, have invented a new and useful Harrow, ofwhich the following is a specification.

The subject of this invention is a harrow, and the invention relatesmore particularly to that class of harrow in which a plurality of barsprovided with downwardly projecting teeth are connected by links so thatthe bars and their teeth may be set at various angles of inclination.

The main object contemplated by the invention is the provision of meansfor tilting the bars so that the teeth may be inclined to dischargetrash which may have accumulated thereon.

The invention further contemplates -the provision of a riding platformfor the harrow. Y

A further object in contemplation of the invention is the provision of asimple, du-

rable, and eflicient harrow.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of theinvention.

A practical embodiment of the invention is shown in the accompanyingdrawing, wherein Figure l is a plan View of a harrow constructed inaccordance with the invention;

Fig. 2 is a central longitudinal section;

Fig.3 is a detail view in side elevation of the lever arm and itsconnecting rod;

Fig. 4 is a fragmentary detail in plan view of the foremost harrow barand the element for connecting the lever arm thereto;

Fig. 5 is a view in side elevation of the sliding block;

Fig. 6 is a rear elevation of the same, the lever arm and connecting rodbeing shown in section.

Referring to the drawing by numerals of reference In carrying out theinvention there is provided a plurality of bars 1 ineach of which aresecured, in the usual and ordinary manner, the spaced, downwardly pro- 7jecting teeth 2. Eye-bolts 3 are secured in transverse apertures formedin the bars 1 and forma connecting means for the ends of links 4:, theends of which are looped or bent through the eyesof the bolts. Olevises5 are pivotally engaged to the foremost bar 1 and serve as a connectingmeans for the chain 6 which constitutes the draft rigging for theharrow.

Other eye-bolts 7-7 are secured to the foremost bar 1 from which theyextend forwardly and are spaced to each side of the longitudinal centerof the bar. 'An aperturcd block 8 has its trunnions 8 rocking in theeyes of the eye-bolts 7 and through the aperture of this block passesthe downwardly bent end 9 of the lever arm 1O, a split pin or key 11being used to secure the end 9 within the aperture of the block 8.

A connecting rod 12 has its forward end pivotally connected to the leverarm 10, at substantially the center of said arm, and its rear end has asliding fit in the longitudinal channel of a block 13. The block 13 hasa transversely arranged inclined groove in which is secured by rivets orotherwise a'bar 14: which terminates in a hooked end 15. A pin 16 isadapted to enter an aperture 17 formed near the rear end of the block 13and any one of a series of apertures 18 formed in the connecting rod 12for the purpose of securing the rod in an adjusted position to the block13. As will be seen most clearly in Fig. 6, the longitudinal channel ofthe block 13 is of suflicient depth to allow the rod 12 to pass betweenthe bottom of the channel and the bar 14:.

The hook 15 is adapted to take into the eye of an eye-bolt 19 which issecured in the rearmost bar 1 at the longitudinal center of said bar.The end of the lever arm 10 may be thrown into the channel of the block13, without the bar 14:,when the lever arm is in horizontal position tohold the harrow in extended, operative position.

A riding platform is provided which consists of boards. 20 arrangedlongitudinally of the harrow and connected by underlying cleats 21, towhich the boards are secured by nailing or otherwise. An open spaceextends longitudinally of the center of the platform, and the forwardend of this space is bridged by the spaced rods 22 which are adapted tolie, the one in front and the other behind the downwardly bent end ofthe lever arm 10.

In practice, the block 13 is adjusted to the desired position on the rod12 and the pin 16 inserted in the alining apertures 17 and 18. T heheel: 15 is then engaged in the eye of the eye-bolt 19 and the lever arm10 thrown down to horizontal position and its free end engaged in thechannel of the block 13. This extends the harrow to operative position.

Should the teeth of the harrow become clogged with grass, weeds, orother trash, the lerer arm 10 is disengaged from the channel of theblock 13 and throvn to the position shown in Fig. 3, thereby tilting thebars 1 and inclining the teeth 2 rearwardly to a sufticient extent toallow the trash to slip therefrom as the harrow is drawn forwardly.

The platter) may be utilized for the operator to ride on, or wei hts maybe placed thereon when desired or necessary.

By this arrangement of the lever and connee-ring rod it is possible tostretch or eX- tend the harrow with great ease and without the necessityof lifting the rear end of the harrow, as is now necessary with mostharrows of tiis character.

Having thus described the invention, what is claimed as new and soughtby Letters Patent, is:-

1. A harrow including a plurality of toothed bars linked together, alever arm having a downwardly bent end connected to the foremost bar, aconnecting rod pivot-ally secured to the lever arm,.a block having alongitudinal channel slidable on the connecting rod means for securingthe block in adjusted position on the rod, a bar depending fronr theblock, a hook at the end of the bar, and a looped member secured to therearmost toothed bar and engageable by the hook.

2. A harrow including a plurality of tootned bars linked together alever arm having a downwardly bent end connected to the foremost bar aconnecting 'rod piv0t ally secured to the lever arm, a block slidable onthe connecting rod, means for securing the block to the rod, means forpivotally connecting the block to the rcarmost toothedbar, and means fordetachably securing the lever arm to the block.

In testimony that I claim the foregoing as my own, I have hereto atlixedmy signature in the presence of two witnesses.

HARRY URBAN WAKEFIELD. lVitnesses W. B. GnEENLAw, H. H. Hrsn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

